Lol very creative idea! Such a unique concept, ants taking revenge on people! Graphically I was pretty impressed. And although the gameplay was simple it was fun to play. Thanks for mentioning about the cars in the page writeup, that gave another avenue to try out.
One thing I noticed is when the game was fullscreen in my browser it did cut off half the score. I didn't see any other HUD so not sure if I may have been missing anything.
Anyways very good job! Very cool idea and a good take on the theme. My last score was 511.